dingusppc/benchmark/bench1.cpp

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/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-21 divingkatae and maximum
(theweirdo) spatium
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
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#include <stdlib.h>
#include <chrono>
#include "cpu/ppc/ppcemu.h"
#include "cpu/ppc/ppcmmu.h"
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#include "devices/memctrl/mpc106.h"
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#include <thirdparty/loguru/loguru.hpp>
uint32_t cs_code[] = {
0x3863FFFC, 0x7C861671, 0x41820090, 0x70600002, 0x41E2001C, 0xA0030004,
0x3884FFFE, 0x38630002, 0x5486F0BF, 0x7CA50114, 0x41820070, 0x70C60003,
0x41820014, 0x7CC903A6, 0x84030004, 0x7CA50114, 0x4200FFF8, 0x5486E13F,
0x41820050, 0x80030004, 0x7CC903A6, 0x80C30008, 0x7CA50114, 0x80E3000C,
0x7CA53114, 0x85030010, 0x7CA53914, 0x42400028, 0x80030004, 0x7CA54114,
0x80C30008, 0x7CA50114, 0x80E3000C, 0x7CA53114, 0x85030010, 0x7CA53914,
0x4200FFE0, 0x7CA54114, 0x70800002, 0x41E20010, 0xA0030004, 0x38630002,
0x7CA50114, 0x70800001, 0x41E20010, 0x88030004, 0x5400402E, 0x7CA50114,
0x7C650194, 0x4E800020
};
int main(int argc, char** argv) {
int i;
/* initialize logging */
loguru::g_preamble_date = false;
loguru::g_preamble_time = false;
loguru::g_preamble_thread = false;
loguru::g_stderr_verbosity = 0;
loguru::init(argc, argv);
MPC106* grackle_obj = new MPC106;
/* we need some RAM */
if (!grackle_obj->add_ram_region(0, 0x9000)) {
LOG_F(ERROR, "Could not create RAM region");
delete(grackle_obj);
return -1;
}
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constexpr uint64_t tbr_freq = 16705000;
ppc_cpu_init(grackle_obj, PPC_VER::MPC750, tbr_freq);
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/* load executable code into RAM at address 0 */
for (i = 0; i < sizeof(cs_code); i++) {
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mmu_write_vmem<uint32_t>(i*4, cs_code[i]);
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}
srand(0xCAFEBABE);
for (i = 0; i < 32768; i++) {
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mmu_write_vmem<uint8_t>(0x1000+i, rand() % 256);
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}
/* prepare benchmark code execution */
ppc_state.pc = 0;
ppc_state.gpr[3] = 0x1000; // buf
ppc_state.gpr[4] = 0x8000; // len
ppc_state.gpr[5] = 0; // sum
ppc_exec_until(0xC4);
LOG_F(INFO, "Checksum: 0x%08X", ppc_state.gpr[3]);
// run the clock once for cache fill etc.
auto start_time = std::chrono::steady_clock::now();
auto end_time = std::chrono::steady_clock::now();
auto time_elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end_time - start_time);
LOG_F(INFO, "Time elapsed (dry run): %lld ns", time_elapsed.count());
for (i = 0; i < 5; i++) {
ppc_state.pc = 0;
ppc_state.gpr[3] = 0x1000; // buf
ppc_state.gpr[4] = 0x8000; // len
ppc_state.gpr[5] = 0; // sum
auto start_time = std::chrono::steady_clock::now();
ppc_exec_until(0xC4);
auto end_time = std::chrono::steady_clock::now();
LOG_F(INFO, "Checksum: 0x%08X", ppc_state.gpr[3]);
auto time_elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end_time - start_time);
LOG_F(INFO, "Time elapsed (run #%d): %lld ns", i, time_elapsed.count());
}
delete(grackle_obj);
return 0;
}